CN101653045A - Illumination device having inrush current limiting circuit - Google Patents
Illumination device having inrush current limiting circuit Download PDFInfo
- Publication number
- CN101653045A CN101653045A CN200780052750A CN200780052750A CN101653045A CN 101653045 A CN101653045 A CN 101653045A CN 200780052750 A CN200780052750 A CN 200780052750A CN 200780052750 A CN200780052750 A CN 200780052750A CN 101653045 A CN101653045 A CN 101653045A
- Authority
- CN
- China
- Prior art keywords
- current limiting
- limiting circuit
- inrush current
- lighting apparatus
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
- H05B41/285—Arrangements for protecting lamps or circuits against abnormal operating conditions
- H05B41/2851—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions
- H05B41/2856—Arrangements for protecting lamps or circuits against abnormal operating conditions for protecting the circuit against abnormal operating conditions against internal abnormal circuit conditions
Landscapes
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The invention relates to an illumination device having an inrush current limiting circuit (D1-D4, R, M) integrated in a connecting terminal (AK).
Description
Technical field
The present invention relates to a kind of luminous element and a kind of electric ballast that is used to drive lamp.Luminous element and ballast are summarized with term " lighting apparatus " at this.At this, term " lamp " means light-emitting device, such as discharge lamp or halogen incandescent lamp or LED or led module.Term " luminous element " means the lighting device that designs or comprised the lamp that assembles for the assembling of lamp again, this lighting device also has housing, support or is used for the reflector of lamp except lamp, and is used for electrical network battery-driven feeder equipment that connect or lamp.At this, the present invention only relates to the luminous element that comprises integrated electric ballast.
Background technology
Experience shows, particularly when ballast when input side has bigger capacitor, when connecting the lamp that drives by electric ballast, can occur than higher making current peak value.This capacitor for example is extensive use of as the intermediate loop holding capacitor in many ballast types.The making current peak value causes the load of the related device of current peak, and can make the safeties action when particularly driving on a plurality of ballasts one with this specific character coexist safeties in addition.Thus, for can remarkable reduction can one the coexist number of the ballast that drives on the safeties of the nonsensical making current peak value of technical continuous service.
On the other hand, the manufacturing of ballast and luminous element is subjected to tangible cost pressure, makes not consider in fact that in many cases extra being used to limits the measure of electric current (for example by having the power factor correction circuit of intrinsic current limit function).
Summary of the invention
The present invention based on technical problem be, a kind of improved improved luminous element that is used for the electric ballast of lamp and has integrated ballast is proposed, the difficulty that they provide a kind of solution of economy to be used to eliminate or minimizing is relevant with the making current peak value.
One aspect of the present invention is at the luminous element that has integrated electric ballast and luminous element splicing ear, this luminous element splicing ear has terminal shell, it is characterized in that, in terminal shell, be integrated with inrush current limiting circuit, this inrush current limiting circuit is designed to make it to prevent excessive making current by the voltage drop in inrush current limiting circuit during the connection stage when luminous element is connected, and the present invention is on the other hand at a kind of electric ballast that has the ballast splicing ear, this ballast splicing ear has terminal shell, it is characterized in that, be integrated with inrush current limiting circuit in terminal shell, this inrush current limiting circuit is designed to make it to prevent excessive making current by the voltage drop in inrush current limiting circuit during the connection stage when luminous element is connected.
Preferred expansion scheme illustrates in the dependent claims.
What prophylactically determine is that the disclosure also relates to a kind of method that is used for driving by electric ballast lamp or luminous element, and different features also should be applicable to Method type as open.
Basic thought of the present invention is, inrush current limiting circuit is integrated in the splicing ear of luminous element or in the splicing ear of ballast.Inrush current limiting circuit is defined as on general meaning: this inrush current limiting circuit is producing voltage drop (otherwise the making current peak value can occur in this circuit) at first in the line in the connection stage under the connection situation, and this voltage drop subsequently relatively apace, for example in the time of the highest 500ms, disappear or obviously reduce.
In a concrete expansion scheme, voltage drop can produce by the additional switch of the disconnection in the circuit, this switch is at first lingeringly closed, exactly, and in the zone of the little instantaneous value of the supply voltage that applies and closed under the preferred situation at voltage zero-cross.When the power supply of ballast with little or even when beginning near zero supply voltage value, making current limited and can be owing to little supply voltage value the particularly capacitor charging in the ballast without a doubt.
In another expansion scheme, the voltage drop in inrush current limiting circuit produces (otherwise the making current peak value can occur in this circuit) by initial high resistance in the line.This resistance subsequently also should be in the relatively short time, for example disappear in time of maximum 500ms or reduce at least 50 times.The beginning resistance that is used to limit making current depends on wiring, and for example can be at 50 Ω in the scope of 1k Ω.
Be integrated in the terminal shell and mean that splicing ear and inrush current limiting circuit have common housing, thus certainly and do not mean that whole housings of ballast or luminous element.They should be as unified parts assembling and dismounting.
This restricting circuits is integrated into the advantage that has in the splicing ear, can protect ballast or luminous element with simple especially mode and the side circuit ground that does not influence ballast.The splicing ear that is provided with inrush current limiting circuit can be used as the independent parts manufacturing and uses in also immovable technical field in addition.At this, consider luminous element on the whole by its for example with electrical network feed line connection terminals, also consider to belong to the splicing ear of ballast, these splicing ears can link to each other with the luminous element splicing ear by other feed line.Certainly also consider following situation: wherein the luminous element splicing ear is identical with the ballast splicing ear and be structured on the ballast.
Especially, inrush current limiting circuit can use in modular mode to a certain extent, promptly additionally gives following luminous element or ballast: wherein the making current peak value is that a special problem or they provide with this performance characteristic especially and also should sell with slightly higher price thus.Thus, the advantage of the indeclinable batch process of ballast and/or luminous element can be combined with the simple and practical solution that is used to limit making current.
Be used to realize that a kind of favourable possibility of making current restriction for example is thermistor or " NTC " (" negative temperature coefficient " promptly has the strong resistive element that strengthens of conductive capability under the situation that temperature raises).When connecting, thermistor begins or cold or room temperature and resistance value ratio is bigger thus.So electric current can be limited to tolerable value, yet thermistor is heated faster, and thus this thermistor is changed into the significantly lower state of resistance.In continuous firing, be enough to be used in keeping enough low resistance value in the medium and small power loss of thermistor.May suitable hygral equilibrium and resistance balance be set according to the structure type and the load current of thermal environment condition, thermistor at this.
Another of inrush current limiting circuit realizes that possibility is the relay that has the resistance that is connected in parallel.Under the situation that relay disconnects, electric current restriction initially that resistance is at first given in advance.So this relay can come closed and can this resistance of cross-over connection (perhaps can come closed by the voltage and the time delay link that apply) by timing circuit independently, so perhaps also can directly encourage and to come closure for the typical time delay of relay by the voltage that applies.So, can be according to the technical data of employed relay, promptly because other timing circuit or delay circuit are added or do not add in the attraction that its structure type causes delay (Anzugsverzoegerung).
With respect to previously described deformation program, an advantage is that resistance value can be low especially in continuous firing, and resistance value can freely be regulated in the making current restriction.In addition, do not exist, make to disconnect process fast and the process of connecting again also is no problem as the thermal inertia under the thermistor situation.
A kind of alternative scheme for the combination of described relay and resistance is the switching transistor that has the time control of parallel resistor.Be different from " traditional " relay, in fact switching transistor does not have loss.Circuit structure more complicated on the principle might not cause higher price.
The alternative switch transistor also can use thyristor, triac (TRIAC) or IGBT, and its mode with time control is lighted or conducting after connecting, and becomes low resistance thus.
In two deformation programs of Miao Shuing, time control can realize by the RC link, but also can advantageously be undertaken by the original microcontroller that exists or another electronic-controlled installation of ballast in the electric ballast in many modern times in front.
At last, the making current restriction also can be connected by transistorized controlled delay and be realized.The time is controlled, connection slowly that this controlled connection can mean." slowly " means at this, and transistor reaches its conductive capability completely on tens of milliseconds period in the connection process.For this reason, transistor such as MOSFET are encouraged by the mode of correspondingly controlling with the time.When switching transistor can be by load fully, so also can save parallel resistor.
Yet preferably, between transistorized control terminal and its another terminal additional circuit is set, this circuit promptly particularly is limited in the electromotive force on the control terminal in response to the excitation of controlling by the transistorized electric current that will limit control terminal.So sort circuit is the transistorized electric current of (otherwise current peak can occur in this process) restricted passage in the connection process, its mode is and not exclusively connects this transistor.After the connection process of reality finished, when no longer worrying the making current peak value, this circuit can preferably be connected transistor fully, yet this is not must be essential.In addition, referring to elaboration for embodiment.
At last advantageously, the safeties of design calorifics particularly are integrated in the safeties in the terminal shell equally.Can relate to the safeties of a kind of simple fusion safeties or another kind of heat triggering at this.Can prevent from thus to cause danger under the situation of parts according to the present invention short circuit in ballast.
Further set forth the present invention by embodiment below, wherein each feature also can be important for the present invention in other combinations, and relates to type of device and Method type.
Description of drawings
Fig. 1 shows the schematic circuit according to lighting apparatus of the present invention that has thermistor as first embodiment.
Fig. 2 shows the schematic circuit according to lighting apparatus of the present invention that has thyristor and parallel resistance as second embodiment.
Fig. 3 shows the schematic circuit according to lighting apparatus of the present invention that has switching transistor and parallel resistance as the 3rd embodiment.
Fig. 4 shows the schematic circuit according to lighting apparatus of the present invention that has relay and parallel resistance as the 4th embodiment.
Fig. 5 shows the schematic circuit according to lighting apparatus of the present invention as the MOSFET that has linear work of the 5th embodiment.
Fig. 6 shows and has the schematic circuit according to of the present invention lighting apparatus of microcontroller as the driving source of switching transistor as the 6th embodiment.
Fig. 7 shows as the MOSFET that has the clock pulse driving of the 7th embodiment and the schematic circuit according to lighting apparatus of the present invention of smoothing circuit.
Fig. 8 shows the schematic circuit according to lighting apparatus of the present invention of coming the MOSFET of switch according to voltage that has as the 8th embodiment.
Fig. 9 shows not according to electric current in the lighting apparatus of inrush current limiting circuit of the present invention and voltage time distribution map.
Figure 10 shows and has according to electric current in the lighting apparatus of inrush current limiting circuit of the present invention and voltage time distribution map.
Embodiment
In Fig. 1, show wiring in the luminous element according to inrush current limiting circuit of the present invention with the very schematic framework of frame circuit diagram.On the left side shows the electrical network terminal of usefulness " electrical network " expression, and it has phase conductor L, protection ground PE and zero conductor N, and this electrical network terminal guides to luminous element splicing ear AK by the electrical network feed line of further not dividing.Luminous element splicing ear AK is unified plastic casing (illustrating by rectangle), and it has termination contact portion that is used for circuit L, PE and N known, that pack into itself.According to the present invention, the NTC thermistor is connected among the phase circuit L at this.
Protection ground PE guides to luminous element housing contacts portion, and the conduction that promptly guides to the luminous element housing connects.Also be connected with the protection ground terminal (not shown) of the electric ballast EVG shown in the right on this external luminous element housing, this electric ballast also links to each other with zero conductor N with phase conductor L by splicing ear AK respectively.
When connecting, the voltage on the phase L be applied on the NTC thermistor suddenly and by this thermistor since its residue conductive capability be applied on the EVG (electric ballast).At the EVG input diode rectifier bridge is arranged, (unshowned) intermediate circuit capacitor is recharged by this diode rectifier bridge so that be the transducer supply direct voltage of EVG.The thermistor NTC of beginning high value does not allow big charging current, makes the charging process of the intermediate circuit capacitor in EVG slightly postpone.During this period, suitably She Ji thermistor NTC is heated fully, so that carry out the transition in the state of low resistance.Thus, charging process end and ballast work and lamp work are also carried out as common.
The residual resistance of thermistor NTC does not have important effect in this embodiment.After turn-offing, before defencive function is available again, must wait for the fully long time, cool off up to thermistor NTC.Yet when the turn off process and the process of connecting again fast only related to a ballast on the common safeties or a spot of ballast, this shortcoming was tolerable in many cases at least.
Fig. 2 shows second embodiment and to a great extent corresponding to Fig. 1, wherein substitutes by the inrush current limiting circuit that is shown specifically at this thermistor NTC.This circuit has the rectifier bridge that four diode D1-D4 constitute.This bridge not with feed lines or phase lead-out wire are corresponding mutually two nodes between be connected with resistance R and in parallel with it, with the thyristor Thy of diode D1-D4 identical polar orientation.Alternatively, can select TRIAC or IGBT equally.Thyristor Thy is by symbolically encouraging with the timing circuit shown in the time distribution map, and this timing circuit can be realized by simple RC link.In the different half-wave of two polarity of phase L, be right after after connecting and before lighting thyristor Thy, resistance is to the current path of EVG.When thyristor Thy was lighted, it was owing to its conducting state and with resistance R short circuit and the making current that is through with thus restriction.The integrated calorifics safeties of the same expression of F.
Two embodiment relate to a kind of luminous element splicing ear AK.Yet they also can easily transfer to the EVG splicing ear.For this reason, only need terminal AK is envisioned for the whole part of EVG.Circuit links to each other with the luminous element splicing ear so this ballast splicing ear can pass through independently, and perhaps itself has formed the luminous element splicing ear.
Fig. 3 shows the 3rd embodiment, and it is with respect to the difference of second embodiment among Fig. 2, substitutes thyristor there and has used switching transistor, be i.e. power MOSFET M.Source electrode contact site, grid contact site and drain electrode contact site are represented with S, G and D.Content in addition is suitable for the elaboration at Fig. 2.
Fig. 4 shows the 4th embodiment, and it can be set forth the most simply compared to Fig. 1.Thermistor NTC substitutes by common Ohmic resistance R at this, and this resistance is in addition as typically having 220 Ω among the second and the 3rd embodiment.Resistance R can be come bridge joint by the traditional relay of representing with Rel, and this relay is connected between phase conductor L and the zero conductor N with its control contact site in the manner illustrated, and is energized along with the connection process thus.To symbolically represent at this with the part of X mark of relay attracts to postpone, this attractions delay restrictedly realized by structure type or by delay circuit for example the RC link realize.
Fig. 5 schematically shows a kind of circuit, wherein uses the controlled connection of MOSFET T1 to limit making current.Represent again mutually and zero conductor by L and N; F represents integrated calorifics safeties again.MOSFET T1 is connected among the phase feed lines L by four rectifier diode D5-D8, make its all the time polarity correctly be powered electric current and flow through.In addition, phase feed lines L and zero conductor N be connected to the input of EVG, among Fig. 1 to 4 in the common rectifier bridge that do not illustrate especially, that constitute by four rectifier diodes.The intermediate circuit capacitor of EVG is represented with C1 and is the input capacitance of being responsible for the EVG of making current peak value at this.R1 (for example 10k Ω) represents Ohmic resistance, and it only symbolically represents the load that forms by EVG at this.
In addition, Fig. 5 shows, and the grid of MOSFET T1 is connected on the zero conductor by two resistance R 4 (approximately 1k Ω) and R6 and diode D9.Here the resistance R 6 that exemplarily is designed to 100k Ω is used for electromotive force and separates, and together forms level and smooth link with for example capacitor C2 of 3.3 μ F.For example the resistance R 7 of 1M Ω is used in off-state capacitor C2 being discharged.
The supply current of phase conductor L by MOSFET T1 guides by the small resistor R3 of for example 1 Ω, so that produce proportional voltage drop.This voltage drop is used to monitor the grid voltage (exactly, by bipolarity (npn) transistor T 2) of MOSFET T1, T
2Collector electrode be connected to T
1Grid, T
2Base stage be connected to T
1Source electrode, and T
2Emitter be connected to T by other resistance R 5 (about 22 Ω) and mentioned resistance R 3
2Base stage, and be thus connected the source terminal of MOSFET T1.
At last, grid voltage passing threshold voltage is that the Zener diode ZD of about 18V limits.
After the phase of connecting the L place, by resistance R 6 capacitor C2 is charged lentamente, and produce the driving voltage of the increase of the grid that is used for MOSFET T1.In case supply current begins to flow through MOSFET T1 in MOSFET T1 connection process, the voltage that then on resistance R 3, lands, this voltage has reduced the grid voltage of MOSFET T1 under the situation of the emitter base threshold voltage that reaches bipolar transistor T2.
Thus, the interior resistance of the MOSFET T1 that increases in the connection process can be used to limit the making current that causes owing to the charging to capacitor C1.In case capacitor C1 is charged to enough degree, the supply current that then is used for EVG reduces consumingly, and making no longer lands on resistance R 3 voltage that enough makes bipolar transistor T2 closure.In continuous firing, then bipolar transistor T2 keep to disconnect and thus MOSFET T1 can come by the voltage on capacitor C2 fully closed so that do not produce unnecessary loss.
In addition, the emitter base threshold voltage of bipolar transistor T2 is little of making that resistance R 3 can corresponding little ground and low-loss ground design thus according to the magnitude of 0.7V.
But in the form of implementation of alternative with similar functions, bipolar transistor also can substitute by the Zener diode with corresponding little threshold voltage, and this Zener diode is limited in the grid voltage on the MOSFET T1 when it is connected owing to the voltage drop on resistance R 3.Yet required here threshold voltage is greater than the emitter base threshold voltage of bipolar transistor T2, and causes thus designing resistance R 3 slightly bigger, promptly causes slightly bigger loss.
And also can implement by requirements at the higher level ground at the circuit shown in Fig. 5, its mode is that the bipolar transistor T2 that is used to here schematically show substitutes by the measurement amplifying circuit that has operational amplifier.Thus, can avoid because the fluctuation that temperature course and sample variance cause, and also can further reduce the threshold value of 0.7V.
Fig. 6 shows another embodiment, wherein MOSFET M as shown in Figure 3 like that be not that function by the simple timing circuit shown in the there but by microcontroller encourages, this microcontroller is original in electric ballast in many cases just to be existed and can obtain to the connection of the gate terminal of MOSFET M under the situation that has overhead hardly thus.In not having the ballast of current limit function, this is connected in is to keep inoperative, makes not hinder the modular according to splicing ear of the present invention to use.This particularly is applicable to splicing ear is integrated in the situation in the ballast.In addition, the thyristor among Fig. 2 also can encourage by microcontroller in the corresponding way.
Fig. 7 shows another embodiment, and wherein MOSFET pwm signal by pulse-width modulation as in Fig. 3 and 6 encourages, and promptly carries out clock control in time.Thus, produced supply current intermittently, this electric current is transformed to approximately continuous electric current by the series connection smoothing circuit that inductance L, rectifier diode and resistance R constitute.By L and R and the time constant that obtains must match the clock frequency of pwm signal thus.The diode correspondence is in the polarity of rectifier bridge D1-D4.This embodiment shows, connection process controlled in the embodiment of Fig. 5 also can realize with the control technology of digital form, and wherein the key factor in the embodiment of Fig. 7 is not the interior resistance of the MOSFET that exists in the connection process in the environment of threshold voltage.
Fig. 8 shows a last embodiment, and it has the something in common with the embodiment of Fig. 3 and Fig. 4.Compare with the embodiment of Fig. 3, MOSFET M turns on this and does not postpone according to time scheme given in advance, and the detection that is in response to the voltage between phase L and the zero conductor N is carried out.When the possible voltage zero-cross of the next one, switch, make the charging process of input capacitance of EVG, and do not have its big or small debatable rush of current because beginning is only carried out with the voltage that little value rises.Therefore, can save the resistance R that is connected in parallel, and compare with embodiment among Fig. 5, the interior resistance of MOSFET M does not have important function equally in the connection process.
Fig. 9 and Figure 10 are by measuring the effect that shows contrastively according to inrush current limiting circuit of the present invention.At this, horizontal axis all shows the time scale of 0ms to 90ms in two kinds of situations.On the left side, vertical axis drawn and be respectively-and 350V is to the voltage calibration of+350V, and in Fig. 9, drawn on the right-100A is to the electric current scale of+100A, and in Figure 10, drawn-2A is to the electric current scale of+2A.
Moment of the beginning of figure corresponding to the connection of reality constantly.In Fig. 9, this connection (approximately 5ms) constantly is chosen as the feasible peak value that reaches phase L just, promptly has near 350V.Voltage sinusoid ground fluctuation on phase L.In upper area, use U
ZThe jagged of expression illustrates the voltage on the intermediate circuit capacitor of having mentioned in EVG.This voltage just is in the peak value of supply voltage in fact from the outset, and with its synchronously owing to the load in the EVG reduces so that along with each new peak value of phase L again the charging.Reveal in fact unlimited short current impulse I among Fig. 9 connecting constantly corresponding chargometer very fast to intermediate circuit capacitor, this current impulse carry out the transition to immediately shown in scale in fact remain on current curve about 0.So impacting amplitude, the making current of beginning is approximately 100A (it illustrates to exchange, and it can be other identified at voltage curve L thus) in Fig. 9 and 10 on symbol.
Different therewith, Figure 10 shows the charging process very slowly of intermediate circuit capacitor.In the scheme according to a modification of this invention in Figure 10, connection process (greatly when 5ms) the in fact peak value with phase L is carried out.Slightly littler triangle under the triangle of the beginning of phase L shows the first charging current pulse I at this.Yet this current impulse relates to the vertical current scale that changes here, and is remaining on below the 1.5A on the amplitude.Subsequently, synchronously follow the charging current pulse of two similar sines that slightly reduce on extending in amplitude and time with the sinusoid fluctuation of L mutually, it has obviously littler current amplitude.When 60ms, this time signal is carried out (perhaps the thermistor NTC among Fig. 1 becomes enough hot, and perhaps the relay R el among Fig. 4 is switched on) corresponding to the second and the 3rd embodiment ground in Fig. 2 and 3 greatly.This illustrates by the curve that rectangle rises below Figure 10.Subsequently, the charging current peak value is because the making current limiting resistance R that saves now and become big on amplitude, yet owing to be independent of that handoff procedure increases the charging of intermediate circuit capacitor is shortened constantly in time.They be significantly less than under the amplitude situation of 1A stable, right half of referring to Figure 10.Voltage distribution UZ correspondingly distributes at the sawtooth that right one side of something illustrates among Fig. 9, however the rising that on left one side of something of Figure 10 shows with identical periodic modulation and time this external 60ms that has mentioned, distributes.By the present invention, so whole intermediate circuit capacitor voltage is available after tens of milliseconds delay, yet the making current peak value almost is reduced to 1/100 in this case.
Claims (12)
1. lighting apparatus, promptly luminous element has integrated electric ballast (EVG) and luminous element splicing ear (AK), and this luminous element splicing ear has terminal shell,
It is characterized in that, in terminal shell, be integrated with inrush current limiting circuit (NTC, D1-D4, R, Thy, M, Rel, L, T1, T2, R1-R7, ZD, C2), this inrush current limiting circuit is designed to make that this inrush current limiting circuit is by this inrush current limiting circuit (NTC, D1-D4, R, Thy during the connection stage when luminous element is connected, M, Rel, L, T1, T2, R1-R7, ZD, C2) voltage drop in prevents excessive making current.
2. lighting apparatus, i.e. electric ballast, it has ballast splicing ear (AK), and this ballast splicing ear has terminal shell,
It is characterized in that, in terminal shell, be integrated with inrush current limiting circuit (NTC, D1-D4, R, Thy, M, Rel), this inrush current limiting circuit is designed to make that this inrush current limiting circuit is by inrush current limiting circuit (NTC, D1-D4, R during the connection stage when connecting luminous element, Thy, M, Rel, L, T1, T2, R1-R7, ZD, C2) voltage drop in prevents excessive making current.
3. lighting apparatus according to claim 1 and 2, wherein inrush current limiting circuit has voltage monitoring circuit and gate-controlled switch, and is designed for after connecting luminous element in voltage zero-cross place ability the gate-controlled switch closure.
4. lighting apparatus according to claim 1 and 2, wherein inrush current limiting circuit (NTC, D1-D4, R, Thy, M, Rel, L, T1, T2, R1-R7, ZD C2) is designed to make under the situation that luminous element is connected this inrush current limiting circuit to begin the resistance (R that provides big, T1), this resistance reduces subsequently.
5. lighting apparatus according to claim 4, wherein inrush current limiting circuit (NTC) has thermistor (NTC).
6. lighting apparatus according to claim 4, wherein (R Rel) has the relay (Rel) that has parallel resistor (R) to inrush current limiting circuit.
7. lighting apparatus according to claim 4, wherein (D1-D4, R M) have the switching transistor (M) of the time control that has parallel resistor (R) to inrush current limiting circuit.
8. lighting apparatus according to claim 4, wherein (D1-D4, R Thy) have thyristor (Thy), TRIAC or the IGBT of the time control that has parallel resistor (R) to inrush current limiting circuit.
9. according to claim 7 or 8 described lighting apparatus, wherein time control is undertaken by the microcontroller that is integrated in the electric ballast (EVG).
10. lighting apparatus according to claim 4, wherein inrush current limiting circuit (L, D5-D9, T1, T2 R1-R7) has controllably the transistor of connecting (T1).
11. lighting apparatus according to claim 10, wherein between transistorized control terminal and transistorized other terminal, be connected with circuit (T2, R3-R7, ZD, C2), this circuit limits the control terminal electromotive force in response to the electric current of guiding in the transistor (T1).
12. according to each the described lighting apparatus in the aforesaid right requirement, it has the calorifics safeties (F) that are integrated in the terminal shell.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2007/054046 WO2008131795A1 (en) | 2007-04-25 | 2007-04-25 | Illumination device having inrush current limiting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101653045A true CN101653045A (en) | 2010-02-17 |
Family
ID=38663122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200780052750A Pending CN101653045A (en) | 2007-04-25 | 2007-04-25 | Illumination device having inrush current limiting circuit |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20100109554A1 (en) |
| EP (1) | EP2138016A1 (en) |
| CN (1) | CN101653045A (en) |
| WO (1) | WO2008131795A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI576005B (en) * | 2011-10-17 | 2017-03-21 | Ｌｇ伊諾特股份有限公司 | Led driving circuit |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2375856A1 (en) * | 2010-04-08 | 2011-10-12 | Helvar Oy Ab | Transformer arrangement for protecting optoelectronics components |
| US9420658B2 (en) | 2014-12-05 | 2016-08-16 | Xenio Corporation | Inrush energy control for a light emitter |
| DE102015103713A1 (en) * | 2015-02-02 | 2016-08-04 | Ebm-Papst Mulfingen Gmbh & Co. Kg | inrush |
| FR3032316A1 (en) * | 2015-02-02 | 2016-08-05 | St Microelectronics Tours Sas | CURRENT CURRENT LIMITER CIRCUIT |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2121763U (en) * | 1992-02-21 | 1992-11-11 | 蔡福元 | Electronic energy-saving lamp |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4396882A (en) * | 1981-05-22 | 1983-08-02 | Kellenbenz Carl W | Inrush current limiter |
| DE3800018A1 (en) * | 1987-02-03 | 1989-04-13 | Wolfgang Muth | Intermediate means plug for protection of electrical/electronic loads |
| US5343122A (en) * | 1989-07-27 | 1994-08-30 | Ken Hayashibara | Luminaire using incandescent lamp as luminous source |
| US5122724A (en) * | 1991-07-12 | 1992-06-16 | The Boeing Company | Inrush current limiter |
| DE4306117A1 (en) * | 1993-02-27 | 1994-09-01 | Abb Patent Gmbh | Starting-current limiter for fluorescent lamps |
| NL9301397A (en) * | 1993-08-12 | 1995-03-01 | Cm Personnel Participation Bv | Safety switching device for electronic switching devices in general and for an electronic ballast for gas discharge tubes in particular. |
| DE4412640A1 (en) * | 1994-04-13 | 1995-10-19 | Abb Patent Gmbh | Limiter for inrush current to capacitive load |
| US5930130A (en) * | 1997-09-29 | 1999-07-27 | Jrs Technology, Inc. | Inrush protection circuit |
| DE19830368A1 (en) * | 1998-07-07 | 2000-02-03 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Electronic ballast with inrush current limitation |
| US6426885B1 (en) * | 1999-10-06 | 2002-07-30 | Hitachi, Ltd. | Inverter device and motor driving device provided with inrush current prevention circuit |
| JP4158112B2 (en) * | 2004-05-31 | 2008-10-01 | 株式会社デンソー | Inrush current limiting power switch circuit for vehicles |
| US7902769B2 (en) * | 2006-01-20 | 2011-03-08 | Exclara, Inc. | Current regulator for modulating brightness levels of solid state lighting |
-
2007
- 2007-04-25 WO PCT/EP2007/054046 patent/WO2008131795A1/en active Application Filing
- 2007-04-25 CN CN200780052750A patent/CN101653045A/en active Pending
- 2007-04-25 US US12/532,160 patent/US20100109554A1/en not_active Abandoned
- 2007-04-25 EP EP07728502A patent/EP2138016A1/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2121763U (en) * | 1992-02-21 | 1992-11-11 | 蔡福元 | Electronic energy-saving lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI576005B (en) * | 2011-10-17 | 2017-03-21 | Ｌｇ伊諾特股份有限公司 | Led driving circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008131795A1 (en) | 2008-11-06 |
| US20100109554A1 (en) | 2010-05-06 |
| EP2138016A1 (en) | 2009-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6304464B1 (en) | Flyback as LED driver | |
| KR20160098375A (en) | A device and system for led linear fluorescent tube lamp driver | |
| CN101467494A (en) | Dimmer switch with adjustable high-end trim | |
| CN1332596A (en) | Method for eliminating heat of filament by lowering voltage of filament and delaying heating time | |
| CN101653045A (en) | Illumination device having inrush current limiting circuit | |
| CN101839416A (en) | Lighting system, general lamp holder thereof and LED lamp thereof | |
| CN103957636A (en) | Two-wire dimming circuit | |
| CN101960924B (en) | Dimmable instant start ballast | |
| US10314134B1 (en) | Retrofit LED lamp | |
| CN109315041B (en) | Tubular device for fitting to a tubular lamp fitting | |
| CN103391660A (en) | LED lamp over-temperature protection circuit and LED lamp | |
| CN101893218A (en) | LED tube and circuit thereof | |
| CN106439540A (en) | LED fluorescent lamp | |
| CN101111107A (en) | LED lamp current control system | |
| CN102100127B (en) | Circuit arrangement and method for operating at least one lighting device | |
| CN108934103A (en) | The circuit of LED light | |
| CN111432521A (en) | Induction splicing lamp | |
| CN101803468B (en) | Improved applicability of lamps with electronic ballast without a protective earth conductor | |
| CN203590539U (en) | Novel LED lamp tube | |
| US8502460B2 (en) | Fluorescent lamp appliance, and lighting control apparatus of fluorescent lamp appliance | |
| CN101946563A (en) | Device for controlling a discharge lamp | |
| CN206582584U (en) | Led daylight lamp | |
| CN201733477U (en) | LED tube and circuit thereof | |
| CN101060750B (en) | Extendible HID xenon lamp semiconductor transistor intelligent control line set | |
| CN210958882U (en) | Intelligent light-adjusting switch is got to single live wire |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100217 |